Reinforced concrete construction.



R. T. PEIRGB. REINPORCED CONCRETE CONSTRUCTION.

APPLICATION- FILED MAR.12, 1910.

1,060,853. Patented May 6, 1913.

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R. T. PBIRCE.

REINFORCBD CONCRETE CONSTRUCTION.

APPLICATION FILED 111111.12, 1910.

1,060,853. Patented May 6, 1913.

a MEETS-SHEET 2.

R. T. PEIRGB.

REINTORCED CONCRETE CONSTRUCTION.

APPLICATION FILED MAB. 12, 1910.

1,060,853. Patented May C, 1913.

3 SHEETS-SHEET 3.

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UNrrED STATS ROBERT T. PEIRCE, OF NEWPORT NEWS, VIRGINIA.

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REINFORCED ONCRETE CONSTRUCTION.

Specication of Letters Patent.

Patented May 6, 11913.

Application filed March 12, 1910. Serial No. 548,978.

To all whom it may concern:

Be it known that I, ROBERT T. PEIRGE, citizen of the' United States, residing at Newport News, in the county of lVarwick and State of Virginia, have invented certain new and useful Improvements 1n Reinforced Concrete Construction, of which the follow` ing is a specification.

My invention relates to a system of construction for4 the erection of structures continuous bond, of the reinforcing bars or rods. 'It is only by molding the members in place that this result could be attained prior to my invention.

My improved system of concrete construction consists, generally speaking, in molding the individual parts (as columns, girders, etc.) separately in any place desired, and allowing them then to harden. The members are then erected in place and bond-l ed together to form a pratically monolithic structure-by means of the peculiar bonding system which I have devised. In this way, the cost of the molds or forms and the staging for molding the concretebuilding y is avoided and the cost of construction is proved system is the use of hollow columns which are hollow either their whole length or for part of their length at top and bot-- tom, and the combination with such hollow columns of beams or girders or like parts having projecting reinforcing rods or .bars

adapted to overlap when the beams are 4abutted, and which are tied or bonded to each other at the same time'thatthe beams are bondedto the hollow columns. This is secured by bringing the girder ends over the hollow center of the column, and then filling in the center of the column and the space between the ends of the girders with fresh concrete, thus casting acontinuous joint at -the junction of the beams, the columns and j the reinforcing bars. j

My inventionalso contemplates the application of the same principles to concrete flooring and concrete partitions.

For a full understanding of the invention and the meritsthereof, and to acquire a knowledge of the details of construction,

, reference is to be had to the following description .and accompanying drawings, in which:

Figure l is a perspective view showing the manner of supporting horizontal members uponthe vertical members of tll'e struct-ure: Fig.2is avertical seotionthrough superposed columns, the beams supported thereon being partly in elevation and partly in section; Fig. 2a is a'section on the line 80 Y -m of Fig. 2, but showing the mold in v place, whereby the bond is made; Fig. 3 is a perspective view showing the two methods of' attaching the subsidiary beams tothe main beams.v Fig. 4 is a sectional perspec-y 35 tive view showing another means of attaching the fioor slabs to the supporting beams; Fig. 5 is a fragmentary longitudinal section through twoadj acent floor slabs and one of. the support-ing beams; Fig. 6 is a transverse v90 section through two adjacent floor slabs and the supporting beam on the line mof Fig. 7 Fig. 7 is a perspective view showing various forms of ties betweenl the reinforcing bars: Fig. 8 is a horizontal section 95 through the adjacent ends of two partition slabs and a' column; Fig. 9 is a like view to Fig. 11, not showing the column, however, but showing the modified method of bonding the two adjacent partitionv slabs; and, 00

Fig. 10 is a erspective view .of the end of the beams, showing one form of tie rods. Fig. 11 illustrates a beam or girder such as may be used with my improved system showing particularly one manner of reinforcing the girder.

Corresponding and likeparts are referred l, i Y

to in the followlng description and accompanying drawings by the same reference characters. A 11o In Figs. 1 to 2 I yshow'themeans whereby I transverse beams or like horizontal members j are connectedto the columnswupon which they are supported. 2 designates the columns. These columns may be either tubular or hollow from one end to the other, or may be hollow for only a portion of their length, that is, at the ends thereof.- lThe upper ends of the columns are preferably formed on c their inside faces with an annular shoulder beam, but ordinarily these reinforcing rods will be placed below-the neutral axis of the beam, and the ends of the beam will be provided with a plurality of relatively short re" inforcing rods 7 which will roject out from the ends of the beam at di 'erent levels-and extend down to the main reinforcing bar 6, as shown in Fig. 2. It will thus be seen that each beam has a plurality ofreinforcing bars projecting4 out of the ends thereof, and it will also be seen from Fig. 2 that the reinforcing bars on one beam project out far enough to overlap-the projecting rods on the next adjacent or abutting beam, when these beams are placed upon the upper end of one. of the columns 2. These rojecting and overlapping ends of the rein 'orcing bars are adapted to be connected to each other or tied together in any suitable manner. Any one of` many ways of tying these reinforcing bars to each other might be used, and some of these will bedescribed later. As shown inl Fig. 11, however, the ends of the -reinforcing .bars- 6 and 7 are formed with eyes through which a vertical tie rod 8 may be placed. After these beams 5 are in place withtheir ends projecting over the hollow interior lof the column 2 and with their ref inforcing bars tied together by the vertical ,t1e rod 8 or in any other suitable manner,

crete being poured in from the upper -end and being supported upon the plate 4c. The upper end of the interior of the column is thus filled to a level with the upper faces of the beams 5. In order to secure this result,

a mold is used, or box 9 which' incloses the ends of the beams and the upper-portion of the column 2, as shown in Fig. 2a. The columns 2 are each rovided with a plurality of upwardly extending reinforcing rods 10, and as shown in Fig. 2a, these reinforcing rods project up on each side of the beams 5. Thus,- after the cement or concrete has been Loeona with vertically extending reinforcing rods 12. `Where columns are to be superposed upon the columns just erected, as for instance, the columns 2a upon the columns 2. vThe same ope-ration is performed as that previous to the filling in of the bonding cement 11. The column 2a is placed in position resting upon the beams 5 and imme diately above the column 2, its reinforcing bars or/rods 10a extending downward on I either side of the beams 5 and overlapping and tied to the reinforcing bars-or rods 10. The mold 9 is then put in place and cement poured down through the hollow interior of the uppermost column 2a until the upper end of the column 2, the space between the beams 5 and the lower end of the column 2a is filled with cement, as illustrated. This construction, it will be seen, gives a continuous and practically monolithic bond to the beams 5, the column 2 and the column 2a, and furthermore provides, as previously. described, for an enlarged joint between the intersecting longitudinal beams and the transverse beams 5. The result of this construction is shown in Fig. l, wherein the beams: 5 are shown as supported upon the column 2' and in turn supporting a column 2*. lThis figure shows the appearance of the exterior of the columns after the joint has been made. obvious that the same principle may be applied to intersecting beams, as shown in Fig. 2a and as previously described.

' I have also made provision for supporting intermediate transverse beams or girders upon the beams or girders 5. The joint used in thisconst-ruction is shown in Fig. 3,wherein 15 and 16 designate two abutting transverse beams supported'on a beam 5 much as It will be l previously described. The beam 5 is cut through the beam 5 by means of bolts 20, and 125 the outwardly projecting flanges 19 are pro.

vided with openings for the passage of a bolt Y 22. The beams 15 and 16, shown in Fig. 3, are of concrete, separately formed and hardened, and have the lon 'tudinally extending' y reinforcing bars 23 loca ed below the neutral accesos 23 being formed into eyes 24, these rods 23 being shorter than the length of the beam, f

and the eyes '24 being therefore entirely within the beam. The beam is formed with al transverse passage which alines with the eyes 24 and which, when the beam is in place,

alines with the openings in the Hanges 19 so that the pin 22 vmay pass through the extremity of the beams 15 'or 16 and will lock the beam to the hanger 18. Extending upward.

and outward from the reinforcing rods 23 are the reinforcing rods orbars 25 which are U-shaped and extend out of the end 'of the beam 15 or 16 above its neutral axis and in such position as to project over the upper face of the cutaway portion of the beam 5, as shown in Fig. 3. The projecting U- shaped ends of the opposed beams 15 and 16 are thus in alinement with each other and are adapted to be engaged by and drawn toward each other by means of a clip oir connector 26. rhis clip may have any Ysuitable form, but is 'shown as having the form of a U-shaped bolt. After the beams 15 and 16 are in lace andA connected to the beam hanger an to each other, the space between the beams 15 and 16 and the beam 5 and above the latter is to be illed in with dement.l

' out portions of the beams are provided with the `outwardly extending U-shaped clips yor eyes 27. AThe beams 28 which correspond with the beams 15 and 16 are provided with the longitudinally extending reinforcing rods y 29 which project out beyond the ends of the beams and are downwardly turned to formhooks 30. These hooks are adapted to e`n gage over the U-shaped clip 27s The upper portion of the end of the beams 28 is pro# .vided with the U-shaped projecting bar 31 which extends across the upper face of the recessed portion in exactly the samelmanner. as just previously described, the beams ,28' bef ing connected to each other in the same man. .ner as the beams 15 and 16, Athe space be` tween the bars 'and around the beams 5 being filled in with fresh 'cement or concrete.-

which is disposed within thcinterior o thcslab, projects'out beyond the upper port-ion of 'the slab over the upper faoe ofthe lower portion ofthe slab and beyond the edge of the slab so that when side edges of adjacent islabsare abutted, 'as in Fig. 1, the reinfor'' ing wire netting 'or expanded metal of one slab will overlap the wire netting, rods. or'

expanded metal reinforcement of the other slab. The s' ace between the two slabs is Ithen filled with cement or concrete, as 'at 42.

The end edges 'of the slabs'ai'e not abutted" in Contact with each other 'asare' the- 'sidel edges, but 'a space is' left, and the door beam which may be either beams 5, 1:5 or `35, but which is designated in Fig. 4 as 5, is provided with Ythe upwardly projecting 'pins or rods 43 which extend upward between the ends of ath-fe slabs 11 and into engagement with the wire .mesh of the reinforcement. will thus be seen that the two' slabs are 'locked together 'and also interlocked with 'the beam 5a and vthat the space between the floor slabs is filled in with cement 42%. slabs .are provided with a practically con tinuocs bond, and are bonded and interlocked with the door' beams and 'formA practically a Amonolithic construction in entire harmony with the system'by which Ythe col-'- umns and beams fare. attached to each other.

The partition Vwalls may also be constructed practically the saine manner as the iioor slabs, in other words, slabs reinforced by wire netting, rods or expandedmetal, the Vedges of the slabs being cut away' to permit the reinforci -nietal to extend beyond the slabs, said reinforcements being overlap ed and the space between the slabs being d 'with cement. Such construction is show-n in Fig. 8, in which 45 designates one of 'the hollow columns of cement prev1 ou'sly described, 'and 56, 57 and- 58 three partition slabs. The V"slab 56 is c'ut awa on its' margin and is provided with 'the internal rein orcementsw i Y wire netting. These reinforcing members '59 extend thro'ghthe slab and project out beor the slab so that when the youd the edge` slabs 56 and :57 are abutted against each other,

bers -59.wi11 overlap. The space between ch may be of wires,`rods, o'rn the pmiecting ends-'of the reinforcing mem.: I

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the abutting edges ofthe slabs is thelililled with cement 60. The slab l,57 is' shown at one sidcas having .the V-shapccl recess 61 formed in its edge, which coiuclde's with 1a V-shaped recess 61 formed in 'the slab 5 8,vl The reinforcing vrnerjnbcr 59 extends 'out be- A youd themargin of the slab and into the In Figs. 4 to 6 is shown the floor-slab and:

recess in the adjacent slab when the slabs are abutt'ed. rlhe space between the two bers which 'may be tied to each other, if der sired, and by the filling of cement or concrete. The partition' wall :nay be tied to thecolumn by forming the column With4 a vertically extending recess 62 in which the edge-of the adjacent partition slab is re ceived. This column is also rovided with 5 .reinf'orcing members 63embe ded Within it "and extending out into the recess 62,' and then bent atv right-angles so as to overlap the projecting ends or portions .of the reinforcing member 59. The recessed man login of the slab 56 is then filled with cement which also fills the recess 63, thus v bonding and tying the slab 56 to the column.

This lling may also be reinforced by rods.

I -do not wish to` be'limited to any par-l ticular form of reinforcing bonds, rods or wires, as in my's 7stem of concrete construction any form o reinforcing members may be used. These reinforcing members may be tied to eachother in. any desired manner, 20. .and 'I have shown in Fig. 7 a number of fdiferent forms of ties, any one of Which may be used.' Thus in one form, the two reinforcing bars a are' simply lappedupon eachother" and then Wound with the tiey ,wire o'. In anotherform, Ythe looped ends c of the reinforcing bar are brought adjacent to each otherand then drawn together by a Y clip d. `In another form, these two looped ends c of the barsare drawn together by a wrapping of tie wire e. v v

It will be seen that Amy construction, as before stated, provides a system of building concretel structures which secures advantages not incident heretofore to the similar use of independent elements -molded and hardened vand then applied to the Vbuilding but With` out any integral monolithic tie and'continuous bond, and not incident to that form of concrete construction in which the building and its various building elements are molded `tages, and when'the building is completed, it forms practically a monolithic construction ,4s with continuous reinforcing tie bars or rods;

. It is to be noted also that the principles of my invention have been carried out through-y y out all the parts of the building,'and that as far as principle goes, -the Hoor slabs and partit-ion slabs are tied to the beams and colunms in precisely the same manner as the Hoor slabs and girders are `tied to the columnssupporting the same. The principleV is the same in all cases, though the in place. I secure the advantages of boththese' constructions' without their `disadvan' mode in' which the principle is carried out cylindrical and tubular, I wish it distinct y understood that these.

through these columns or through the conimmessi? torete" structuresv supported thereby and 'Y -ments to which theyare to be connected.

My system of construction gives a perfect monolithic construction, more' monolithic than is secured lby the molded-insplaoe method, andparticularly as Where the structural'elements are molded in place, there are 'often joints and seams caused by the stop- 'page of the Work, wherever the Work is stopped for any length of time, as Well as where construction ceases inone place and is begun at another. By my system, l secure a joint of concrete With concrete which is more perfect than can be secured by the molded-in-p-lace7 method, for the reason that more pains Wouldbetaken and the structural members and the joint could be better inspectedf` Furthermore, a richer mixture could be used. A structure made under my system is monolithic, for the reason that the concrete Ain a reinforced concrete structure is 'only subjected tocompression strains, and

it is as strong against this as if it were solid, the reinforcing rods of one structural element being connected to thereinforcing rods ofthe next adjacent element.' By my system also the reinforcing rods can be put under tension, if so desired, and this cannot be done in the molded-in-place method.

Furthermore, in my system, all the joints are in the most convenient position and do not occur` accidentally as they d'o in the molded-in-pla'ce method above described. Means may also be provided for taking up expansion.

While as before stated l do not wish `to be limited in any way to the reinforcement which l may vuse, "or to the manner of reinforcing the 'concrete columns or beams I have shown as-an illustration in Fig. l1 a concrete beam With` a very effective system of reinforcing. This-beam is to be used in the same manner, as the beams 5 and 15 shown vin Fig. 3 and consists of a concrete body 116 through the lower portion of which below the neutral axis passes the 'longitudi' nal extending-reinforcing members or rods 117, these are parallel to each other and pro-` ject out at their ends beyond the body 116 and are hooked as at 118. Extending longitudinally through the beam parallel tothe.

rods l117 are the parallel rods 11,9 whichl'as they near the ends of the beam are upwardly `bent'a's @#120 and then extend againparallel i to the rods 117 and extend out through the ward and forward filling the space between the ends of the rods 120 and 117 where the rods 120 separate from the rods 117. vThis manner of reinforcing the beam is merely shown lfor detailed illustration, the previous figures of my construction showing these rods and reinforcing members diagrammatically. y

Having thus described I claim is.

1. In a concrete construction, a vertical column, said column being hollow and provided with reinforcing bars extending beyond t-he ends of the column, the interior face of the column being provided with an inwardly projecting shoulder, in combination with beams of concrete having reinforcing -bars extending therethrough and projecting beyond the ends thereof, the projecting ends of said reinforcing members of abutting beams being tied together above the hollow interior of the column, a column superposed upon the abutting ends of adjoint-he invention,.what

ing beams and in alinement with the column below, and concrete filling disposed inrthe interior. of both columns and joining the ends of the beams, said filling being supported on the shoulder formed in the co1- umn, and reinforcing members passing through said concrete filling.

2. In a concrete construction, a supportl ing beam -recessed upon its upper face and its sides, subsidiary beams abutting on either side of the main supporting beam and in alinement with said recess, reinforcing mem-v bers projecting out of the ends of the subsidiary beams and over the recessed portion of the main beam, means for interlockingv the lower portion of the subsidiary beams with the main beam, and a filling of con-Y crete filling the cut'away portion of the main beam and surrounding the reinforcing membersof the subsidiary beams. f

3. In concrete construction, a main beam recessed upon its upper face, beam hangers supported upon said main beam adjacent to said recess, and bolted to the same, subsidiary beams of concrete supported with their ends in said hangers, on either side of the main beam, reinforcingmembers located in` said subsidiary beams, projecting into the cut-away portion inthe upper faceof themain beam, said. reinforcingmember of one subsidiary beam being tied. to the reinforcing member of the opposed subsidiary beam, transverse bolts passingthrough the beam hangers and through the subsidiary beams,

and a filling of cement filling the space between the subsidiary beams and the main beam and inclosing said reinforcing vlmembers. f(-

in presence of two witnesses.

ROBERTT. PEIRCE.

Witnesses:

ELBERT NExsEN, Jas. A. WHITE.

In testimonywhereof I atlix my lsignature 

